Watertight Glands and NPT Ports
To make glands and plugs watertight, use PTFE tape and follow these steps.
1. Wrap four to eight passes of polytetrafluoroethylene (PTFE) tape around
the threads as close as possible to the hexagonal body of the gland.
2. Manually thread the gland into the housing hole. Never apply more than
5 in-lbf of torque to the gland or its cable clamp nut.
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Seal any unused PG-7 access holes with one of the supplied black plastic plugs. To install a watertight PG-7 plug:
1. Wrap four to eight passes of PTFE tape around the plug’s threads, as close as possible to the flanged surface.
2. Carefully thread the plastic plug into the vacant hole in the housing and tighten using a slotting screwdriver. Never
apply more than 10 in-lbf torque to the plastic plug.
Seal the 1/2-inch or 3/4-inch NPT port(s) if it is not used. To install a watertight NPT plug:
1. Wrap 12 to 16 passes of PTFE tape evenly across the length of the threads.
2. Manually thread the plug into the housing port until reaching some resistance.
3. Using a crescent wrench, turn the plug until all the plug’s threads are engaged by the housing port or until the
resistance doubles. Do not over-tighten as this will damage the Sure Cross unit. These threads are tapered and will
create a waterproof seal without over-tightening.
2.4.2 Other Installation Requirements
2.4.2 Reduce Chemical Exposure
Before installing any devices in a chemically harsh environment, contact the manufacturer for more information regarding
the life-expectancy. Solvents, oxidizing agents, and other chemicals will damage the devices.
2.4.2 Minimize Mechanical Stress
Although these radio devices are very durable, they are sophisticated electronic devices that are sensitive to shock and
excessive loading.
•
Avoid mounting the devices to an object that may be shifting or vibrating excessively. High levels of static force or
acceleration may damage the housing or electronic components.
•
Do not subject the devices to external loads. Do not step on them or use them as handgrips.
•
Do not allow long lengths of cable to hang from the glands on the Gateway or Node. Cabling heavier than 100
grams should be supported instead of allowed to hang from the housing.
•
Do not crack the housing by over-tightening the top screws. Do not exceed the maximum torque of 4 in-lbf.
It is the user’s responsibility to install these devices so they will not be subject to over-voltage transients. Always ground
the devices in accordance with local, state, or national regulations.
2.4.2 When Installing Performance or MultiHop 1-Watt Radios
Notice: This equipment must be professionally installed. The output power must be limited, through the use of firmware or
a hardware attenuator, when using high-gain antennas such that the +36 dBm EIRP limit is not exceeded.
2.4.3 Installation Quick Tips
The following are some quick tips for improving the installation of wireless network components.
Create a Clear Communication Path
Wireless communication is hindered by radio interference and obstructions in the path between the transmitter and
receiver. To achieve the best radio performance, carefully consider the installation locations for the Gateways and Nodes
and select locations without obstructions in the path.
For more information about antennas, please refer to the Antenna Basics reference guide, Banner document p/n 132113.
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This is not a lot of torque and is equivalent to the torque generated without using tools. If a wrench is used, apply only very light
pressure. Torquing these fittings excessively damages the device.
Sure Cross
®
DX70 Wireless Point-to-Point Kits
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www.bannerengineering.com - Tel: 763.544.3164
